Question about Samsung SMH7178STD Microwave Oven

8 Answers

Removing an over the range Samsung smh4150 microwave from the wall.

The motor seized and was blowing the curcuit breaker.
when I opened the bottom to disconnect the motor , a motor wire shorted against the frame and now there is no power to the key pad and the lights are out.
I started to remove the oven from the wall to take it in for service,but it is not coming off easily.
I don't have the install instructions.

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  • 2 more comments 
  • gopherly Jan 03, 2009

    I am going to have to remove the unit from the wall to have it repaired.
    How do I remove it from the wall bracket?

  • gopherly Jan 03, 2009

    I have removed the unit from the wall.
    How do I remove or test the curcuitboards to find the blown component?

  • gopherly Jan 03, 2009

    I need to find out how to find the blown component.
    The oven has no power.
    I shorted one of the turntable motor wires.

  • gopherly Jan 14, 2009

    The transformer was shorted out.

    Thanks for the help.

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8 Answers

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Hi
Remove the screws from the back and check for any blown fuses , also for burned parts . Check if power cable coming from mains is not burned .
Thankyou

Posted on Jan 03, 2009

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Hi,
If you have no power to the main boards, then the multi-tap transformer has probably broken down.

Test the continuity / Ohms of the input and outputs of this first to ensure you have a viable supply.

Posted on Jan 03, 2009

  • Richard Perkins
    Richard Perkins Jan 03, 2009

    These are available as a replacement item.

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The unit will have to be removed and the unit will have to be tested

Posted on Jan 03, 2009

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You need a service assistance

please call 1-800-SAMSUNG (1-800-726-7864), or go on-line to WWW.SAMSUNGSUPPORT.COM

Posted on Jan 03, 2009

  • Maanita Chadha
    Maanita Chadha Jan 03, 2009

    Step 1. Remove the Front Grill Screws
    Remove the two screws that secure the grill to the chassis.
    Step 2. Remove The Grill From The Chassis
    Remove the grill by sliding it to the left, then pulling out.
    Step 3. Remove/Install The Charcoal Filter
    You need to locate if any screw is securing the unit on the wall.

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Take the mounting screws out of the top. (usually in the upper cabinet)
Then slightly LIFT - as it is seated in a lip-mount bracket to the wall.

Posted on Jan 03, 2009

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Remove the two screws inside cabinet right above microwave let it drop and then lift the back easy out

Posted on Jan 03, 2009

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You can follow the instruction from manual to remove the oven completely .


First disconnect power to the oven. Remove the mounting screws securing the oven to the wall. Slide the complete oven out about 10 inches.

Posted on Jan 03, 2009

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  • Samsung Master
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The frame carries ground, if a wire shorted to ground surely ine of the wires had melt, or there is a blown fuse, or something has blown on control board.

The whole wiring and boards must be tested using a multimeter.

Posted on Jan 03, 2009

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Phillips whirlpool microwave turntable not turning


HELLO.

The turntable is the unit in the center of a microwave that you set your food on. It rotates during the microwave cycle, making sure all parts of a dish are properly heated. These are typically made of either hard glass or microwave-safe plastic.

Your microwave turntable may not turn due to any of these problems explained below.



(a)If your turntable is removable (as many are for cleaning purposes), it may have come loose from this turning mechanism.place the turntable properly on the turning mechanism.


(b)If your turntable was previously working and now does not any longer, check the settings on your microwave's LCD display to make sure you haven't accidentally turned off the turntable.
Most microwaves have different settings that the user can select with the press of a button, like a "Defrost" setting or a "Popcorn" setting. Certain microwaves may stop the turntable from turning during certain pre-programmed selection modes. Stop your microwave and don't use a pre-programmed mode. Instead, just specify the time using the number pads and start your microwave to see if your turntable begins to rotate again.


(c)The rotating mechanism on the inside of your microwave that rotates the turntable is actually connected to a small motor on the inside of your microwave's case. If this motor burns out or stops working, the mechanism will stop turning. This is something that needs to be replace.

follow these steps below to replace the faulty motor.

1. Open the microwave door, and carefully remove the turntable tray. Also, remove the frame that the turntable is positioned on. Both the turntable and the frame are not secured in the oven, so removing them is a quick process.

2 .Remove the bottom panel of the microwave. The Microwave Wizard website explains that the number of screws securing the panel varies depending on the manufacturer and specific microwave. Once the bottom panel is loosened, disconnect its wiring harness in order to completely remove the panel.

3. Locate the turntable motor. The Microwave Wizard website explains that the motor compartment should be positioned below the center of the microwave. Unscrew the motor, disconnect the wires, and remove it from the microwave.

4. Determine the specific part number for the turntable motor so that a correct replacement can be purchased or ordered. Position the new motor into the shaft in the bottom of the microwave. Screw the motor securely into place.

5. Test the microwave to make sure that the turntable motor is operating correctly. The Microwave Wizard website explains that the motor can make noises if it was not positioned evenly in the shaft. Reconnect all of the wires that were detached when removing the old motor.

6. Reinstall the microwave's bottom panel parts, and secure all of the screws in place. Reposition the turntable frame in the bottom of the microwave and place the turntable on top of it. Test the microwave in order to make sure that everything is working correctly.


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